Q: How is the number 30,421,732 written in Scientific Notation?

 A: 3.0421732 x 107

Why is 30,421,732 written as 3.0421732 x 107 in scientific notation?

The purpose of scientific notation is for scientists to write very large, or very small, numbers with ease.

Calculating scientific notation for a positive integer is simple, as it always follows this notation:

a x 10b

Follow the steps below to see how 30,421,732 is written in scientific notation.

Step 1

To find a, take the number and move a decimal place to the right one position.

  • Original Number: 30,421,732
  • New Number: 3.0421732

Step 2

Now, to find b, count how many places to the right of the decimal.

New Number: 3.0421732
Decimal Count: 1234567

There are 7 places to the right of the decimal place.

Step 3

Building upon what we know above, we can now reconstruct the number into scientific notation.

Remember, the notation is: a x 10b

a = 3.0421732

b = 7

Now the whole thing:

3.0421732 x 107

Step 4

Check your work:

107 = 10,000,000 x 3.0421732 = 30,421,732


More Scientific Notation Examples

30,421,73030,421,73130,421,73330,421,734
3.042173 x 1073.0421731 x 1073.0421733 x 1073.0421734 x 107

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